A custom-made slipcover for a large boxy sofa, like Andrea’s Pottery Barn piece, looks and functions best in a supple heavyweight fabric. It covers and defines the squared arms and other angular features better than a lighter weight fabric that is too limp or clingy.
For this project I used cotton-poly canvas in Charcoal. Besides being durable and washable this cloth has the same contemporary vibe as the sofa design. I love it when function, fit and fabric are in sync!